September weather forecast
Manila, Philippines

A small stream and beautiful garden parks near the city of Manila, Philippines
A small stream and beautiful garden parks near the city of Manila, Philippines

Weather in September

September, the first month of the autumn, in Manila, is still a hot month, with temperature in the range of an average high of 30.5°C (86.9°F) and an average low of 24.8°C (76.6°F).

Temperature

In September, the average high-temperature is almost the same as in August - a still hot 30.5°C (86.9°F). The average low-temperature, in Manila, is 24.8°C (76.6°F).

Heat index

The average heat index is computed to be a torrid 39.6°C (103.3°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, metabolic differences, pregnancy). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

Months with the highest humidity are August and September, with an average relative humidity of 81%.

Rainfall

In Manila, during September, the rain falls for 21 days and regularly aggregates up to 128mm (5.04") of precipitation. Throughout the year, there are 185 rainfall days, and 830mm (32.68") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature is 28.7°C (83.7°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in September is 12.2h.

Sunshine

In September, the average sunshine in Manila is 8.4h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in September in Manila?

The average high-temperature, in September, in Manila, Philippines, is 30.5°C (86.9°F), while the average low-temperature is 24.8°C (76.6°F). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is computed to be 39.6°C (103.3°F).

What is the most humid month in Manila?

August and September, with an average relative humidity of 81%, are most humid months in Manila.

What is the average humidity in September in Manila?

In September, the average relative humidity in Manila is 81%.

How many days does it rain in September in Manila?

In September, in Manila, the rain falls for 21 days. Throughout September, 128mm (5.04") of precipitation is accumulated.

What is the sea water temperature in September in Manila?

In Manila, the average seawater temperature in September is 28.7°C (83.7°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Manila have in September?

In Manila, Philippines, the average length of the day in September is 12.2h.

How long on average sun shines in September in Manila?

The average sunshine in September in Manila is 8.4h.

What is the month with the highest UV index in Manila?

Months with the highest UV index are February through December, with an average maximum UV index of 7.

How high is the UV index in September in Manila?

In Manila, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.

Average temperature in September
Manila, Philippines

Average temperature in September - Manila, Philippines
  • Average high temperature in September: 30.5°C

The warmest month (with the highest average high temperature) is May (33.4°C).
The month with the lowest average high temperature is January (28.3°C).

  • Average low temperature in September: 24.8°C

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.9°C).

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Average pressure in September
Manila, Philippines

Average pressure in September - Manila, Philippines
  • Average pressure in September: 1008.2mbar

The month with the highest atmospheric pressure is February (1013.4mbar).
The month with the lowest atmospheric pressure is August (1007.6mbar).

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Average wind speed in September
Manila, Philippines

Average wind speed in September - Manila, Philippines
  • Average wind speed in September: 8.1km/h

The windiest month (with the highest average wind speed) is January (11.4km/h).
The calmest month (with the lowest average wind speed) is May (7.5km/h).

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Average humidity in September
Manila, Philippines

Average humidity in September - Manila, Philippines
  • Average humidity in September: 81%

Months with the highest relative humidity are August and September (81%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in September
Manila, Philippines

Average rainfall in September - Manila, Philippines
  • Average rainfall in September: 128mm

The wettest month (with the highest rainfall) is July (163mm).
The driest month (with the least rainfall) is February (11mm).

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Average rainfall days in September
Manila, Philippines

Average rainfall days in September - Manila, Philippines
  • Average rainfall days in September: 21 days

The month with the highest number of rainy days is July (23.4 days).
The month with the least rainy days is February (7 days).

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Average sea temperature in September
Manila, Philippines

Average sea temperature in September - Manila, Philippines
  • Average sea temperature in September: 28.7°C

The best month for swimming (with the highest average sea temperature) is May (29.8°C).
The coldest month (with the lowest average sea temperature) is February (27°C).

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Average daylight in September /
Average sunshine in September
Manila, Philippines

Average daylight in September / Average sunshine in September - Manila, Philippines
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13h).
The month with the shortest days is December (Average daylight: 11.3h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is April (Average sunshine: 11.3h).
The month with the least sunshine is January (Average sunshine: 6.2h).

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Average sunshine days in September
Manila, Philippines

Average sunshine days in September - Manila, Philippines
  • Average sunshine days in September: 7.8 days

The month with the most sunshine days is March (16.9 days).
The month with the least sunshine days is July (7 days).

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Average UV index in September
Manila, Philippines

Average UV index in September - Manila, Philippines
  • Average UV index in September: 7

Months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).

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Average cloud cover in September
Manila, Philippines

Average cloud cover in September - Manila, Philippines
  • Average cloud cover in September: 44

The month with the most cloud cover is August (Cloud cover 51).
The month with the least cloud cover is April (Cloud cover 25).

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Average visibility in September
Manila, Philippines

Average visibility in September - Manila, Philippines
  • Average visibility in September: 9km

Months with the highest visibility are February, March, April, May, June and December (10km).
Months with the lowest visibility are January, July, August, September, October and November (9km).

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